In vivo and in vitro studies were performed to evaluate acute toxicity, organ-specific distribution, and tissue accumulation of copper in Callinectes sapidus acclimated to two different experimental salinities (2 and 30 ppt). Blue crabs were quite tolerant to copper. Acute dissolved copper toxicity (96-h LC(50) and its corresponding 95% confident interval) was higher at salinity 2 ppt (5.3 (3.5...

The mol-ecular structure of the title compound, [Cu(C11H16N3O3S)2], shows the Cu(II) atom with a distorted square-planar coordination geometry from the N2O2 donor set of the two chelating 2-{[bis-(dimethyl-amino)-methyl-idene]amino}-benzene-sulfonate ligands. The Cu(II) atom lies 0.065 (1) Å above the N2O2 plane and the Cu-O [2 × 1.945 (2) Å] and Cu-N bond lengths [1.968 (3) and 1.962 (3) Å] li...

The MXAN3885 to -3882 gene locus cluster (designated here mcuABCD) of Myxococcus xanthus encodes a member of the archaic chaperone-usher (CU) systems that functions in spore coat formation. We show here that McuD, a putative spore coat protein, affects cellular accumulation and cell surface localization of the spore coat protein McuA. We previously reported that genetic disruption of the putati...

The title compound, (C(10)H(10)N(2))[Cu(C(2)O(4))(2)] or (4,4'-H(2)bpy)[Cu(ox)(2)] (bpy is 4,4'-bipyridine and ox is oxalate), is an ion-pair complex comprising a protonated 4,4'-bipyridinium dication and a square-planar dioxalatocopper(II) dianion. In the centrosymmetric dianion, the Cu(II) centre is coordinated by four O atoms from the two dicrete oxalate ligands [Cu-O = 1.9245 (19) and 1.925...

BACKGROUND Antisocial children with callous-unemotional (CU) traits appear to be disconnected from other people's emotions; although little is known about their experience of the parent-child emotional bond. This study examined parent-child attachment relationships and levels of CU traits in conduct-problem children. METHOD Attachment classifications in boys (M = 6.31 years) with disruptive b...

Therapeutic drug monitoring is an esential tool for a positive management therapy. The prefered laboratory strategy is immunoassay. Due to the cross-reactivity to other components, alternative approaches, such as LC-MS, are continously under investigation. The paper described briefly the main aspects regarding LC-MS apparatus and technique and recent applications on therapeutic drug monitoring,...

Ag-Cu-Ti system is important for brazing applications and mainly for ceramic joining. This system is characterized by numerous intermetallics in the Cu-Ti binary and the existence of a miscibility gap in the liquid phase. For applications, the knowledge of phase equilibria, invariant reactions in the temperature range of interest and thermodynamic activity values (mainly of Ti) are important. T...

O objetivo deste trabalho foi comparar a complexação de substâncias húmicas (SH) e α-aminoacidos (metionina, metionina sulfoxido e cloridrato de cisteína) por elementos traço de interesse biológico (Al, Cu, Pb, Mn, Zn, Cd e Ni). Sistema de ultrafiltração tangencial foi utilizado para diferenciação entre os complexos SH-metal e α-aminoácidos-metal. As determinações de metal foram feitas utilizan...